TY - JOUR AU - Gaponova, O. P. AU - Kolosyuk, A. G. PY - 2018/10/25 Y2 - 2024/03/28 TI - Researches of Diffusion Processes in Powder Materials and Their Role in Structure Formation JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 59 IS - 10 SE - Solid matter DO - 10.15407/ujpe59.10.1013 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018541 SP - 1013 AB - <p>The equation of Fick’s second law describing the diffusion in a porous powder body is solved in the framework of the Green’s function method. The proposed mathematical model allowed the influence of the temperature, deformation rate, and porosity of a material on the diffusion coefficient to be analyzed. The microstructure of copper-titanium specimens after the sintering and a plastic deformation is studied. The increase in the temperature, as well as in the rate and the degree of a deformation, is found to promote the alloy homogenization.</p> ER -